669120516270 has 48 divisors (see below), whose sum is σ = 1739809292832. Its totient is φ = 178422296640.

The previous prime is 669120516269. The next prime is 669120516271. The reversal of 669120516270 is 72615021966.

669120516270 is a `hidden beast` number, since 6 + 6 + 9 + 12 + 0 + 5 + 1 + 627 + 0 = 666.

669120516270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (669120516269) and next prime (669120516271).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669120516271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1515655 + ... + 1906685.

It is an arithmetic number, because the mean of its divisors is an integer number (36246026934).

Almost surely, 2^669120516270 is an apocalyptic number.

669120516270 is an abundant number, since it is smaller than the sum of its proper divisors (1070688776562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669120516270 is a wasteful number, since it uses less digits than its factorization.

669120516270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410057 (or 410054 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 669120516270 in words is "six hundred sixty-nine billion, one hundred twenty million, five hundred sixteen thousand, two hundred seventy".